Hello guys, ive recently upgraded from a sony alpha100 to a canon 40d + sigma 30mm f/1.4 prime lense, as i realised i usually shoot under low light conditions. However i was pretty surprised to know that an entry level kit lense (18-55mm f/3.5-5.6) is sharper than my prime at f/3.5. (centre,border & extreme border sharpness!), of cos stopping down the prime to f/3.5 too. Arent prime lenses supposed to be sharper stopped down? so if the kit lense is really sharper at f/3.5 onwards, are we paying top dollar only for the bokeh effect and lower light capability?
I was comparing the resolution of both lenses using the MTF graphs.
Looking to be enlighten thanks !